3B engine: interference or non-interference?

Joined
Sep 2, 2007
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Longmont, CO
From looking inside one I would have guessed no.

However this link says yes: 1JZGTE info, interference engine or not? - JZX World Forums

Ghost was correct about toyota bein NON- Interference engines, unless you have an LX90 chaser/cresta/mk2 with the 2L-TE diesel engine i would not worry about your valves meeting with the piston... unless they drop of course :p

Other interference engines include:
(all diesel)
B, 2B, 3B, 11B, 13B, 13B-T, 14B, 15B
L, 2L, 3L, 5L
C, 2C, 3C-T
1HZ, 1HD-T, 1HD-FTE
2H, 12H-T
1KZ-TE,
1KD-FTV, 2KD-FTV
1PZ
Im sure there are some other variations but that just about covers the main ones.

Dunno.
 
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Jun 23, 2006
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Bradenton Fl
iesel / interference

Interference engine

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An interference engine is a type of 4-stroke internal combustion piston engine. Depending on the design of an engine, piston and valve paths may "interfere" with one another as a result of incorrect timing in their movements. (Such designs are also called "interference head" or "non-freewheeling", and include virtually all diesel engines.
 
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Sep 3, 2007
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New Zealand
Isn't the whole question irrelevant?

The 3B doesn't have a cam belt. So the cam belt can't break if it doesn't exist!

So why do you care?

:beer:
 
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Apr 10, 2011
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Toronto, Ont. Canada
Thanks for the input guys.

I'm a new owner of an '81 BJ42 and the diesel engine is new territory to me.

Since taking ownership of the truck last week, I've been going over some of the maintenance items since I wasn't sure of what was changed or not.

I didn't realize that the 3B does not have a timing belt or chain assembly so that makes me feel better.

Cheers.
 

DanS HJ-45

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Dumont, CO
I didn't realize that the 3B does not have a timing belt or chain assembly so that makes me feel better.

This should make you feel even better.
timing gears.jpg

They aren't exactly wimpy gears, either. ;) If you did something bad enough to have to worry about it being an interference engine, you're going to be buying a new one anyway....

Dan
timing gears.jpg
 

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